The Universe went through seven gestational periods, a period of 1.2 billion years, followed by six periods of 2.1 billion years. These periods correspond to seven primordial Sephirot that "broke" from their original "place" because the Divine "light" was too intense, so that they "fell", to establish the lower worlds. The abundance of quotes in the previous sentence is to indicate that the event described - which is the "death" of the seven "Kings" of "Edom" - is not physical, and is beyond time and space. Nevertheless, its end was the emergence of the physical world, which represents the Kings within time and space.
Altogether, the eight kings rule for 52,000 "years", corresponding to the primordial Name of 52. The first seven kings correspond to 46,000 "years", which actually lasted 13.8 billion years. The eigth King corresponds to the 6,000 "years" of Malchut, which actually last 78,112 physical years. In a way, the reign of the eigth King lasts 6,128 "years" (78,240 physical years), until Techiat HaMetim. The Torah does not mention the death of the eigth king because his reign ends with the opposite of death.
פב
